Canister



FIG. 1 is a front/right/top perspective view of a canister (a front/left/top perspective view would be a mirror image thereof);

FIG. 2 is a rear/left/bottom perspective view thereof (a rear/right/bottom perspective view would be a mirror image thereof);

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines show portions of the canister that form no part of the claimed design. 

CLAIM I claim the ornamental design for a canister, as shown and described. 